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BEAN ELOURING MACHINE.

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BEAN PLOURING MACHINE.

No. 254,784. A Patented Mar. 7,1882.

N. PETERS. Phutvmhngmplwr. wnsningxon. D C.

UNITE STATES sWENT einen;

l WALLACE VVARREN, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONEHALF TO FRANK C.TAYLOR, OF SAME PLACE,

BRAN-FLOURING MACHINE.

SPECIFICATION forming part of Letters Patent No. 254,784, dated March 7,1882. Application filed August 15, 1881. (No model.) l

To altwhom fit may concer/n:

Be it known that I, VVALLAGE WARREN, of Chicago, State of Illinois, haveinvented certain new and useful Improvements in Bran- Flouring Machines;and I do hereby declare that the following is*r a full, clear, and exactdescription thereof, reference being had to the accompanying drawings,and to the letters otl reference marked thereon, which form a part ofthis specification.

This invention relates to apparatus for comminuting bran, and is thesame as that illustrated in another patent to me of even date herewith,wherein I have described a new lnethod and product in the manufacture ofwhole-wheat iour, or llour made from the inner grain substance togetherwith portions of the bran. A distinctive feature of such iiour isthatthe bran is reduced by itself or separately from the inner substanceofthe grain to a degree of tineness substantially equal to that ofthestar'chy portions, and is thereafter mingled with such starchy portionsto form the improved product mentioned. The reduction of the bran to asuitable degree of tineness is difficultorim possible by ordinarygrinding-m achines, the object ofsuch machines being gen erally toeffect only the reduction of the inner portionof the grain and to avoidthe reduction of the bran. The purpose of this inventon is to provide asuitable means for the reduction ofthe bran to the degree of nenessrequired.

Said invention consists in the several devices and combination ofdevices hereinafter described, and pointed out in the claims, and

.is herein illustrated in a machine comprising a circular shell havingits inner periphery covered by a sharply-rough surface, and a wingeddisk mounted to rotate rapidly within the shell, whereby the bran fedinto the shell near its center is rapidly swept about land against thesharp scrrations mentioned, which cut the bran into tine particles,y Amarginal opening in each side of the shellallows the bran-flour orcomminuted bran nto escape by being blown out by the action of the wingsof the disk when sufficiently reduced.

In the drawings, Figure 1 is a central section of the machine, taken atright .angles to the disk-axis. Fig. 2 is a central verticalsectionthrough the disk-axis. Fig. 3 is a side elevation of thc machine and avertical section of the housing, into which the machine discharges; andFigs. 4, 5, and 6 Iare details.

A is the circular peripheral wall ot' the shell, and consists oftwosemicircular cast-iron bodies about eight inches wide, each providedwith a foot-piece, A, by which the parts are supported on the bedplate Bto form, when brought together, a circular band ot' about tive feet indiameter. These parts are held united bythe bolts which confine the sameto the bed-plate B by flanges and bolts at the top, and by the circularside plates, A2, which are secured to the edges ofthe band A hy bolts a.Said side plates are made in two parts, and are flanged and joined inthe same plane with the band A. y

C C are a number of narrow steel plates, which form the inner peripheralsurface ofthe shell, and which are held in place againstV the peripheralband A by means of the annular recessesc2 in the side plates, A2, inwhich said narrow plates C C rest.

D is a smooth steel disk mounted upon the central shaft, E, which issupported in the external bearing-blocks, H H, upon both sides of theshell, and is provided with the pulley P. Said bearing-blocks restbroadly on the same strong bed-plate B, so as to support the disk Dcentrally and'accurately parallel with the interior sides ofthe shell AA2. The disk D is secured to the shat't E by means of the right and leftthreaded nuts F F, one on each side ofthe disk, between which nuts andthe disk are inserted smaller disks or plates D', the larger of whichare preferably riveted irmly to the disk D. Said disk is set and thussecured with the utmost accuracy at right angles to the shaft E, so asto run perfectly true and noiselessly. The disk D is in diameter aboutone and one half inch less than that of the shell interior after theplates C C are in place, so that the edge of said disk runs at allpoints at about three-fourths of an inch from said plates C. The outermargin of said disk is provided with a series of wings, l I, one ofwhich is shown detached in Fig. 5, wherein it will be seen a slot, t',is provided in the wingplate, by which said plate embraces the edgeofthe disk D. Said wing-plate is also bent to nearly a right angle atthe inner end of the slot t', giving the tiange 12, which, when the wingis applied to the disk, rests against the edge of the latter.

To fasten the wing-plates firmly to the disk D angle-irons I are rivetedon opposite sides ot said disk, as indicated in Figs. l and 2. To theseangle-irons'the wing-plates are also riveted, as also shown by saidFigs. 1 and 2. 'Ihe disk D is about one-fourth ot' an inch in thickness,and the wings I are about one-eighth of an inch in thickness. Thewing-flanges I2 therefore run about tive-eighths of an inch from thesurfacesof the plates C C. ,At the sides theyrun in as closely to theshell-walls A2 as practicable. These dimensions may be varied. The innerfaces of the steel plates C C are sharply serrated,like a single-cuttile, the serrations in alternate plates running preferably inoppositely-oblique directions, Yas shown in Fig. 2.

Feed-pipes R R enter the shell at opposite points in the side plates,A2, near the center of the machine. Discharge-openings J are alsoprovided through the side plates, A2, opposite each other and at theinner periphery of the shell, each ot which openings is provided withthe gate L, running in guides j, and provided with the slots l, notnarrower than the openings J. By means ofthe sliding gate L, having theslot l, the opening J may be narrowed and its outer margin at the sametime moved toward the center ot' the machine. For the purpose ot movingand holding the gate L the latter has the threaded lug Z', and the plateA2 has the opposite lug, l2, to which lugs the adjusting-screw L istitted, as shown in Fig. 3. The said openings J are located preferablyon a horizontal line with the shaft E, as clearly shown, and a portionof the shell containing said openings is housed within the chamber M.The bottom walls, a, of said chamber are inclined, giving the hopper N,in the bottom of which is located the conveyer N. The chamber M isdivided by a dustcloth, O, and above or outside said dust-cloth the saidchamber has an outlet for the. escape of air.

In the operation of this machine the disk D is revolved at a highvelocity. The bran is fed to the interior of the shell through the pipesR, and is at once carried outward to the periphery of the shell andrapidlyswept about therein against the sharply-serrated faces of thesteel plates C. In this movement the bran is rapidly and uelycomminuted, and when reduced t0 the condition ot' tine flour escapes bythe openings J into the chamber lVI, where The dust-cloth or diaphragm Omay repre- 1 sent a series of arresters', by which the entire branproduct will be recovered from the aircurrent. Such devices forarresting the braniiour may be located in other positions than thatshown, and they may be provided with any suitable means for detachingand collecting the bran-Hour therefrom. `Plainly, in the rapid rotationot' the disk D a strong current of air will be induced downward throughthe pipes R and outward through the openings J. It is found that theaction ot' the air operates to abstract moisture from the bran developedin its reduction, and thereby contributes to the keeping qualities ofultimate product in which it is combined.

I have as a substitute for the steel file-cut plates C G used blocks ofburr-stone with fair results; but the cut steel plates are preferable.

I claim as my invention? l. In a bran-flouring machine, the combination, as shown, of the cylindricshelland winged disk, said shell havingits inner periphery minutely and sharply rough, as described, and havinga suitable inlet and a lateral adjustable outlet located near butslightly inward from the periphery, whereby the bran 4may be swept aboutagainst the rough face of the shell until suitably reduced and thendischarged, substantially as described.

2. In combination with the shell having the lateral marginal opening J,the slide L, having the slot l arranged with the opening J, so as tovary the distance ofthe discharging-oritice from the periphery of theshell, substantially as described, and Vfor the purposes set forth.

3. In the bran-reducing machine described, the disk D, provided with thewings I, having the flanges I2 turned backward and supported from thedisk at the outer margin of the wings, substantially as described.

4. In the branreducingmachine described, the disk D, provided withopposite wings, I, each pair consisting ot a single plate having a slot,t', and bent at the extremity of the slot, as shown and described, andfor the purposes set forth.

In testimony that I claim the foregoing as my invention I affix mysignature in presence of two witnesses.

VVALLAC'E WARREN.

Witnesses:

FRANK D. THoMAsoN, JEssE Cox, Jr.

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